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Amino acid composition of epilithic biofilm and benthic animals in a large Siberian river / A. A. Kolmakova [et al.] // Freshwater Biology. - 2013. - Vol. 58, Is. 10. - P2180-2195, DOI 10.1111/fwb.12200 . - ISSN 0046-5070
Кл.слова (ненормированные):
Amino acids -- Epilithic microalgae and cyanobacteria -- Nutritive quality -- River ecosystem -- Zoobenthos
Аннотация: We studied amino acid (AA) composition of epilithic biofilms and zoobenthos near the shore at a middle section of the Yenisei River (Siberia, Russia). We hypothesised that there was an imbalance between the composition and content of amino acids in the biofilm and its consumers, the zoobenthos, as well as between those in the zoobenthos and fish. Based on monthly sampling from 2007 to 2010, there was seasonal variation in AA profiles in the epilithic biofilms, probably caused by the succession of microalgal and cyanobacterial species. Overall, there was an imbalance in the percentage of the essential amino acids (lysine and histidine) between benthic animals and their food (the epilithic biofilm), which suggests that benthic animals may be limited by food quality. Moreover, the zoobenthos had a significantly higher content of AA, relative to carbon, than the biofilm. Based on sampling in 2012, there was an imbalance between the AA profiles of zoobenthos and that of their main consumer, the Siberian grayling (Thymallus arcticus), particularly in the percentages of two essential amino acids, lysine and leucine. In terms of overall content of essential amino acids, the nutritional value to fish of gammarids, which have recently invaded the river, was significantly lower than that of indigenous taxa, trichopteran and chironomid larvae. В© 2013 John Wiley & Sons Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Science, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kolmakova, A.A.; Gladyshev, M.I.; Kalachova, G.S.; Kravchuk, E.S.; Ivanova, E.A.; Sushchik, N.N.

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Seasonal features of consumption of lysine by uncultivated bacterial plankton of Eutrophic water reservoir / M. Y. Trusova, O. V. Kolmakova, M. I. Gladyshev // Contemporary Problems of Ecology. - 2012. - Vol. 5, Is. 4. - P391-398, DOI 10.1134/S1995425512040154 . - ISSN 1995-4255
Кл.слова (ненормированные):
16S ribosomal RNA -- biogeochemical function -- denaturing gradient gel electrophoresis -- eutrophic water reservoir -- lysine -- microecosystem (MES) -- uncultivated bacterial plankton -- amino acid -- bacterioplankton -- bacterium -- biogeochemistry -- electrokinesis -- eutrophication -- laboratory method -- microbial community -- polymerase chain reaction -- reservoir -- seasonal variation -- specialization -- Bacteria (microorganisms)
Аннотация: Dynamics of bacterial plankton community of eutrophic water reservoir in laboratory microecosystems with amino acid lysine was studied using PCR-DGGE technique. The addition of lysine to the microecosystems resulted in changes in the composition of the bacterial plankton in summer; in particular, a number of Lys1 and Lys2 species (genotypes) that consume this amino acid grew fast in the bacterial community. The plank tonic bacterial communities did not respond to the addition of lysine in spring and late summer. The obtained data confirm the hypothesis for the narrow specialization of bacterial plankton species to the consumption of individual organic substances. В© 2012 Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Akademgorodok 50-50, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Svobodnii prosp. 79, Krasnoyarsk 660041, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Trusova, M.Y.; Kolmakova, O.V.; Gladyshev, M.I.

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Dynamics of amino acid composition of the medium during culture of isolated liver and kidneys by the controlled perfusion method / V. A. Barashkov [et al.] // Bulletin of Experimental Biology and Medicine. - 1976. - Vol. 80, Is. 11. - P1305-1307 . - ISSN 0007-4888
Кл.слова (ненормированные):
amino acid -- dog -- in vitro study -- kidney perfusion -- liver perfusion -- theoretical study
Аннотация: The dynamics of the amino acid composition of the medium was investigated during perfusion of the dog liver and kidney for 6 h with a mixture of autogenous plasma and medium No.199 in the ratio of 2:3. During culture of the kidney for 6 h the histidine concentration in the medium increased by 2.2 times compared with initially, the concentration of glutamic acid by 1.7 times, and of alanine and lysine by 1.6 times, whereas the concentrations of arginine, serine, and aspartic acid fell by 3.3 times and those of glutamine with threonine by 2.5 times. During perfusion of the liver the concentration of glutamic acid rose by 2.9 times, of alanine by 2.3 times, cystine by 2.0 times, and glycine by 1.5 times. The concentration of tyrosine fell by half, and that of phenylalanine and serine by 1.4 times. The arginine concentration fell so quickly during perfusion of the liver that by the second hour after the beginning of perfusion no arginine could be found in the medium. The method of amino acid analysis during organ culture as described can be used as a method of developing and correcting culture media.

Scopus
Держатели документа:
Siberian Div., Dept. Biophys., L.V. Kirenskii Inst. Phys., Acad. Sci. USSR, Krasnoyarsk, Russia : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Barashkov, V.A.; Gitel'zon, I.I.; Nefedov, V.P.; Trubachev, I.N.

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Dynamics of amino acid composition of the medium in isolated organ culture by the controlled perfusion method / V. A. Barashkov [et al.] // Bulletin of Experimental Biology and Medicine. - 1975. - Vol. 80, Is. 7. - P759-761 . - ISSN 0007-4888
Кл.слова (ненормированные):
amino acid -- tissue culture medium -- dog -- in vitro study -- organ culture -- organ perfusion -- theoretical study
Аннотация: The dynamics of the amino acid composition of the perfusion fluid was investigated during adequate perfusion of isolated dog organs (the thorax and a complex consisting of the thoracic organs, kidneys, and liver). The concentration of amino acids such as histidine, lysine, and alanine in the perfusion fluid 6 h after the beginning of perfusion of the organ complex was higher, whereas that of arginine, serine, aspartic acid, threonine with glutamine, isoleucine, proline, leucine, and valine was much lower than initially. In experiments on the isolated thorax the dynamics of the amino acid composition of the medium was studied during perfusion for 4 h. The concentration of alanine, lysine, and histidine in the medium increased, whereas those of serine, aspartic acid, isoleucine, tyrosine, and phenylalanine decreased.

Scopus
Держатели документа:
Siberian Div., Dept. Biophys., L.V. Kirenskii Inst. Phys., Acad. Sci. USSR, Krasnoyarsk, Russia : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Barashkov, V.A.; Gitel'zon, I.I.; Nefedov, V.P.; Trubachev, I.N.

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AsLn2, a luciferin-related modified tripeptide from the bioluminescent earthworm Fridericia heliota / V. N. Petushkov [et al.] // Tetrahedron Letters. - 2014. - Vol. 55, Is. 2. - P463-465, DOI 10.1016/j.tetlet.2013.11.061 . - ISSN 0040-4039
Кл.слова (ненормированные):
Bioluminescence -- Fridericia heliota -- Luciferin -- Modified peptide
Аннотация: AsLn2, an unusual modified peptide, was isolated from the bioluminescent earthworm Fridericia heliota (Enchytraeidae). Its structure, elucidated by NMR and mass spectrometry, includes residues of tyrosine, CompX (a novel tyrosine modification product, reported in the accompanying paper), and N(omega)-acylated lysine. Chromatography, UV, and 1H NMR data imply a close structural similarity of AsLn2 with F. heliota luciferin. AsLn2 appears to be an intermediate or by-product in F. heliota luciferin biosynthesis. © 2013 Elsevier Ltd. All rights reserved.

Scopus
Держатели документа:
Laboratory of Bioluminescent Biotechnologies, Institute of Fundamental Biology and Biotechnology, Siberian Federal University, pr. Svobodnyi, 79, Krasnoyarsk 660041, Russian Federation
Laboratory of Photobiology, Institute of Biophysics, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, Moscow 117997, Russian Federation
Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Campo Alegre St. 687, Porto 4169-007, Portugal
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Petushkov, V.N.; Dubinnyi, M.A.; Rodionova, N.S.; Nadezhdin, K.D.; Marques, S.M.; Esteves Da Silva, J.C.G.; Shimomura, O.; Yampolsky, I.V.

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Novel Mechanism of Bioluminescence: Oxidative Decarboxylation of a Moiety Adjacent to the Light Emitter of Fridericia Luciferin [Text] / M. A. Dubinnyi [et al.] // Angew. Chem.-Int. Edit. - 2015. - Vol. 54, Is. 24. - P7065-7067, DOI 10.1002/anie.201501668. - Cited References:15. - We thank Dr. K.V. Antonov for acquisition of LC-HRMS spectra and Prof. Gary Schuster for fruitful discussion. This work was supported by the Russian Science Foundation grant 14-50-00131. M.S.B. acknowledges support by a stipend program of the President of the Russian Federation. K.M.S. acknowledges generous support from the National Science Foundation (CHE-1213047). This research was carried out using the equipment provided by IBCH core facility (CKP IBCH). . - ISSN 1433-7851. - ISSN 1521-3773

РУБ Chemistry, Multidisciplinary
Рубрики:
STRUCTURE ELUCIDATION
CHEMILUMINESCENCE
CYPRIDINA
Кл.слова (ненормированные):
bioluminescence -- bioorganic chemistry -- luciferin -- oxidative -- decarboxylation -- peptides
Аннотация: A novel luciferin from a bioluminescent Siberian earthworm Fridericia heliota was recently described. In this study, the Fridericia oxyluciferin was isolated and its structure elucidated. The results provide insight into a novel bioluminescence mechanism in nature. Oxidative decarboxylation of a lysine fragment of the luciferin supplies energy for light generation, while a fluorescent CompX moiety remains intact and serves as the light emitter.

WOS
Держатели документа:
Russian Acad Sci, Inst Bioorgan Chem, Moscow 117997, Russia.
Pirogov Russian Natl Res Med Univ, Moscow 117997, Russia.
Russian Acad Sci, Akademgorodok, Siberian Branch, Lab Photobiol,Inst Biophys, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Branch Shemyakin, Pushchino 142290, Russia.
Russian Acad Sci, Ovchinnikov Inst Bioorgan Chem, Pushchino 142290, Russia.

Доп.точки доступа:
Dubinnyi, Maxim A.; Kaskova, Zinaida M.; Rodionova, Natalja S.; Baranov, Mikhail S.; Gorokhovatsky, Andrey Yu.; Kotlobay, Alexey; Solntsev, Kyril M.; Tsarkova, Aleksandra S.; Petushkov, Valentin N.; Yampolsky, Ilia V.; Russian Science Foundation [14-50-00131]; President of the Russian Federation; National Science Foundation [CHE-1213047]

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